中巴资源卫星的矿化蚀变信息提取研究——以东天山沁城地区为例

本文利用东天山荒漠地区中巴资源卫星数据,通过掩膜处理,包括光谱角降低冲击物影响,动态阈值降低植被干扰,并对生成的基础图像用主成分分析法提取羟基异常,以标准离差σ作为遥感异常切割尺度进行异常分级。以前期ETM提取结果及东天山矿产地质图为检验源,经过对比分析,验证中巴资源卫星数据在找矿方面具有可行性。(重新修改了摘要)

CBERS data for extracting mineralizing alteration information in Qin Cheng of east Tianshan

In this paper,by use of the principal component analysis method,hydroxyl alteration information is extracted from CBERS remote sensing data,on which mask processing(alluvium mask though SAM method,vegetation mask by band ratios with dynamic threshold method)is used before extraction in the desertification area called Qincheng of east Tianshan.After extraction,the standard deviation σ was used as the measure for anomaly slicing.At last,by comparing with the anomalous packets extracted from ETM in early period and mineral geological map of east Tianshan,practical significance for mineral exploration using CBRES data has been proved.